Datasheet

Pneumatic Circuit
Warning
SOL.C SOL.BSOL.A
W
SOL.B SOL.C SOL.A
W
SOL.C SOL.B
W
SOL.A
ON
OFF
ON
ON
ON
OFF
ON
ON
SOL.B
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
SOL.C
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
Caution
W
SOL.C
SOL.B
SOL.A
W
SOL.B
SOL.C
SOL.A
W
SOL.B
SOL.A SOL.C
1. Be certain to use an pneumatic circuit which will apply
balancing pressure to both sides of the piston when in a
locked stop.
In order to prevent cylinder lurching after a lock stop, when
restarting or when manually unlocking, a circuit should be used to
which will apply balancing pressure to both sides of the piston,
thereby canceling the force generated by the load in the direction
of piston movement.
2.Use a solenoid valve for unlocking which has a large effective
area, as a rule 50% or more of the effective area of the cylinder
drive solenoid valve.
The larger the effective area is, the shorter the locking time will be
(the overrun amount will be shorter), and stopping accuracy will be
improved.
3. Place the solenoid valve for unlocking close to the cylinder,
and no farther than the cylinder drive solenoid valve.
The shorter the distance from the cylinder (the shorter the piping),
the shorter the overrun amount will be, and stopping accuracy will
be improved.
4. Allow at least 0.5 seconds from a locked stop (intermediate
stop of the cylinder) until release of the lock.
When the locked stop time is too short, the piston rod (and load)
may lurch at a speed greater than the control speed of the speed
controller.
5. When restarting, control the switching signal for the unlocking
solenoid valve so that it acts before or at the same time as the
cylinder drive solenoid valve.
If the signal is delayed, the piston rod (and load) may lurch at a
speed greater than the control speed of the speed controller.
6. Basic circuit
1. A 3 position pressure center solenoid valve and regulator with
check valve can be replaced with two 3 port normally open
valves and a regulator with relief function.
1) [Horizontal]
Forward
Backward
3 port
normally
closed
SOL.A
Pressure
center
Regulator with
check valve
Action
Forward
Locked stop
Unlocked
Forward
Backward
Locked stop
Unlocked
Backward
0.5 s or
more
0 to 0.5 s
0.5 s or
more
0 to 0.5 s
2) [Vertical]
Load in the direction of
rod retraction
Load in the direction of
rod extension
2) [Vertical]
Load in the direction of
rod retraction
Load in the direction of
rod extension
[Example]
1) [Horizontal]
3 port
normally open
3 port
normally
closed
Regulator with relief function
Cylinder side Cylinder side
598
Series CL
Specific Product Precautions 3
Be sure to read before handling.
The precautions on these pages are for the fine lock cylinders and the lock-up cylinders.
For general actuator precautions, refer to Actuator Precautions on pages 3 to 7.
P0595-P0668-E.qxd 08.11.17 2:57 PM Page 598